Most efficient way to preview video

essami wrote on 1/17/2009, 10:24 AM
Hi,

Im editing a video and I can use the build dynamic RAM preview to preview about 9 seconds of video. The render this way happens really fast and I love it! But is there any way to preview the whole 3 minute edit Im doing? What would be the fastest way to see it 25fps real time? Rendering it to any format takes way longer then the dynamic RAM preview.

My project is 1080-25p EX1 MXF files. Theres multiply compositing on 4 tracks and some levels adjustment etc.

My computer is Dell Precision M4400 laptop with Vista 64bit and 4GB of ram.

Thanks for help!!

Sami

Comments

PeterWright wrote on 1/18/2009, 12:49 AM
You didn't mention what preview quality you are using, but reducing this, say to Preview (Auto) will give a lot longer RAM preview than Best (Full)

I always use this setting, since I already know how the full quality render will look at the finishe, and the reason I use RAM preview is to check the timing of everything is ok.

Also - you didn't say how much RAM you have allocated to preview - increasing this can also give you longer full speed previews.
farss wrote on 1/18/2009, 5:55 AM
I think the problem here is comping tracks. I sure like to check this kind of work at full res. However several minutes of it is quite a stretch, even if you have enough RAM to hold it all it can take a while for Vegas to render it into RAM. Then you change something and you need to repeat the whole process.

Dedicated compositing applications are better at this than NLEs and although they use different smarts to ease the pain I'm not certain if even they would give essami what he's after. I can wait quite a while for AE to build a RAM preview at Best Full Res. The only plus with it is it is better than Vegas at not rendering things it's already rendered. That said it fits no more into what RAM I have than Vegas does.

As essami is running under Vista 64 best shot might be more RAM. Under XP Vegas limits preview RAM to 1GB and that doesn't hold much HD at full res at all.

Bob.
essami wrote on 1/18/2009, 6:47 AM
Hi everyone,

Thank you very much for the answers! Im previewing everything at Preview (auto) quality at 889x500 window. This is plenty of quality for my purpose as long as it runs 25fps so I cant time the footage to the music properly.

I upped the RAM to 512MB and I get 38 sec of dynamic RAM preview now so thats great!

Sami